2016年7月22日
UVA 11174 Stand in a Line
摘要： All the people in the byteland want to stand in a line in such a way that no person stands closer to the front of the line than his father. You are gi 阅读全文
posted @ 2016-07-22 14:34 四叶草的诉说 阅读(191) 评论(0) 推荐(0) 编辑